Question 1

How many litter boxes do I need for 2 cats?

Accepted Answer

For 2 cats, you need a minimum of 3 litter boxes using the n+1 rule (number of cats plus one extra). This prevents resource guarding and ensures one box is always available, even if another cat is using one or has claimed a favorite. The extra box acts as neutral territory.

Question 2

What is the n+1 litter box rule?

Accepted Answer

The n+1 rule is a veterinary guideline from the American Association of Feline Practitioners (AAFP) that recommends having one litter box per cat, plus one extra. So 1 cat needs 2 boxes, 2 cats need 3 boxes, and 3 cats need 4 boxes. This prevents resource guarding and gives cats options when nature calls.

Question 3

Where should I place litter boxes in my house?

Accepted Answer

Place litter boxes in quiet, low-traffic areas away from food and water bowls. Each box should have easy escape routes so cats never feel trapped. In multi-floor homes, have at least one box per floor. Spread boxes throughout the home rather than clustering them together, especially in multi-cat households.

Question 4

Do I need a litter box on every floor?

Accepted Answer

Yes, in multi-story homes, you should have at least one litter box on each floor. This is especially important for senior cats or kittens who may struggle with stairs. Cats prefer not to travel far when they need to eliminate, and having boxes on each level prevents accidents.

Question 5

Can two cats share one litter box?

Accepted Answer

While two cats technically can share one litter box, it is not recommended. Sharing often leads to litter box avoidance, territory issues, and house soiling problems. Even bonded cats may have subtle bathroom territory disputes. The n+1 rule (3 boxes for 2 cats) prevents these common problems.

Cat Litter Box Calculator

Your Household

Frequently Asked Questions

Calculator Inputs

Your Household

Frequently Asked Questions